This method validates that the current user is authenticated. If the current user is not authenticated, the HTTP status is set to 401 (Unauthorized).

To validate that the current user is a specific user (by user ID or by user name), use the RequireUser() method. To validate that a user is a member of a role or set of roles, use the RequireRoles(String[]) method.

For an example of how to use the RequireAuthenticatedUser() method, see the Logout.cshtml file in the Starter Site template.